my emulator lags on resident evil zero when recording with camtasia 7

[pete_6777]

hey guys i have been trying to record resident evil zero i got 2 parts recorded and when i get up to the part where i have to use the card to stop the brakes its lags really bad with camtasia is there a way to stop the lag my settings are
operating system windows 8.1
dolphin im using dolphin 4.0 2123
processor intel ® core ™ i7-4700MQ CPU @2.40GHZ 2.40GHZ
installed memory 16 GB
system type 64 bit operating system x64 based processor
any help would would appericated is because of me running both dolphin and camtasia